47511413 has 4 divisors (see below), whose sum is σ = 50306220. Its totient is φ = 44716608.

The previous prime is 47511397. The next prime is 47511421. The reversal of 47511413 is 31411574.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 31411574 = 2 ⋅15705787.

It can be written as a sum of positive squares in 2 ways, for example, as 19864849 + 27646564 = 4457^2 + 5258^2 .

It is a cyclic number.

It is not a de Polignac number, because 47511413 - 2⁴ = 47511397 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47511613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1397378 + ... + 1397411.

It is an arithmetic number, because the mean of its divisors is an integer number (12576555).

Almost surely, 2^47511413 is an apocalyptic number.

It is an amenable number.

47511413 is a deficient number, since it is larger than the sum of its proper divisors (2794807).

47511413 is a wasteful number, since it uses less digits than its factorization.

47511413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2794806.

The product of its digits is 1680, while the sum is 26.

The square root of 47511413 is about 6892.8523123595. The cubic root of 47511413 is about 362.1868255140.

Adding to 47511413 its reverse (31411574), we get a palindrome (78922987).

The spelling of 47511413 in words is "forty-seven million, five hundred eleven thousand, four hundred thirteen".